Re: Fwd: Re: CDrom


Subject: Re: Fwd: Re: CDrom
From: Greg Jetter (greg@lazymountain.com)
Date: Sun Dec 23 2001 - 10:11:24 AKST


On Sunday 23 December 2001 12:02 am, Jim Gribbin wrote:
> I tried that (or thought I did anyway), and was unable to access my
> non-writer cd with ide-scsi. I was able to 'see' it with Xcdroast, I
> just couldn't access it. Could be I didn't set something correctly.
>
> Could the fact that my non-writer cd is a dvd-rom drive cause it not to
> be accessable with ide-scsi?

I have no idea if it works the same for DVD devices , if your using it as a
CD-rom it may not behave the same as a regular CD-rom .

>
> With both cd's being on the same ide chain, I would tend to worry about
> buffer underruns anyway with a cd to cd direct transfer. I can already
> make enough coasters.

Thats true , I haven't realy given that much thought , I just started burning
CD so i'm still learning the whole sheban , it took me a few tries to figure
out how to get the directory structure right on the burnt cd's , the doc's
provided are very thin and I had to guess a lot.

Good luck

merry christmass

Greg

>
> Jim
>
> On Sat, 2001-12-22 at 20:16, Greg Jetter wrote:
> > ---------- Forwarded Message ----------
> >
> > Subject: Re: CDrom
> > Date: Sat, 22 Dec 2001 20:15:23 -0900
> > From: Greg Jetter <greg@lazymountain.com>
> > To: Jim Gribbin <jgribbinajs@yahoo.com>
> >
> > On Saturday 22 December 2001 03:45 pm, you wrote:
> > > I never did get Xcdroast to talk to a regular cdrom drive. If you have
> > > things set up wrong, it will see it - but not talk to it. At least that
> > > was my experience.
> > >
> > > To get an ide cd-burner and a regular cdrom drive working on the same
> > > system, I had to modify both lilo.conf and modules.conf.
> > >
> > > The append line in lilo.conf tells the system the it should use the
> > > ide-scsi module. eg. "hdc=ide-scsi". This is for the ide cd-burner.
> > >
> > > The modules.conf file also needs some additions, primarily to keep the
> > > standard ide cd using the ide-cd module.
> > >
> > > options ide-cd ignore=hdb # tell the ide-cd module to ignore
> > > hdb
> > > alias scd0 sr_mod # load sr_mod upon access of scd0
> > > #pre-install ide-scsi modprobe imm # uncomment for some ZIP drives
> > > only
> > > pre-install sg modprobe ide-scsi # load ide-scsi before sg
> > > pre-install sr_mod modprobe ide-scsi # load ide-scsi before sr_mod
> > > pre-install ide-scsi modprobe ide-cd # load ide-cd before ide-scsi
> > >
> > > I did read somewhere that the ide-scsi module could be used with a
> > > standard cd-rom, but you lose dma access which slows things down. It
> > > didn't seem to work with mine anyway.
> > >
> > > All the details are in the cd-writing how-to.
> > >
> > > Jim Gribbin
> > >
> > > On Fri, 2001-12-21 at 14:44, Mike Barsalou wrote:
> > > > For some unknown reason, Xcdroast doesn't see my regular CD-rom.
> > > >
> > > > Anyone have enough experience to give me some ideas about how to fix
> > > > it?
> > > >
> > > > Could it be the similar problem that Jim Gribbon had with his CDrom?
> > > >
> > > > Jim, want to reiterate what you did to fix it? Couldn't find it in
> > > > the archives.
> > > >
> > > > Mike
> >
> > I too had problems when using Xcdroast , I solved them by makeing both my
> > regular CD and my Cd read-write scsi devices by using the ide-scsi
> > driver.
> >
> > one thing additional you got to do is , well realy two additional things
> > ,
> >
> > 1. change the symbolic link in /dev for your regular cd and cd
> > recorder to the appropaite scsi device name , in my case it was
> > /dev/scd0 and /dev/scd1 for the two drives , and of course if your going
> > to mount them at boot time then change
> >
> > 2. /etc/fstab to reflect the new device's
> >
> > that in addition to seting up modules.conf is all you need ,
> >
> > From the doc's I read the lilo thing is optional , if you use modules
> > it has no effect , if you got ide compiled into the kernel then you
> > need it to tell the kernel not to grab the CD's, I just made an entry in
> > modules.conf fro both drives ...
> >
> >
> > now I can read from the regular CD and write the contents to the CD
> > writter with out having to copy anything onto my hard drive. Works great
> >
> >
> > Greg
> >
> > -------------------------------------------------------



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